Unit 4 - io, collections_java

What method is used for reading bytes from a file in Java?

• A) readBytes()

• B) fileRead()

• C) read()

• D) getBytes()

Which of the following is not a method of the Set interface?

• A) add()

• B) get()

• C) remove()

• D) iterator()

Which class would you use to write character streams in Java?

• A) FileOutputStream

• B) BufferedWriter

• C) InputStreamReader

• D) ByteBuffer

If you want to ensure that a collection retains the order of its elements as they were added, which implementation would be most appropriate?

• A) HashSet

• B) LinkedHashSet

• C) TreeSet

• D) PriorityQueue

To remove duplicates from a list while maintaining the element order, which collection type should you convert the list into?

• A) HashSet

• B) LinkedHashSet

• C) TreeSet

• D) PriorityQueue

You need to implement a FIFO (First-In-First-Out) structure. Which collection interface provides this capability?

• A) Set

• B) List

• C) Queue

• D) Map

You have a SortedSet of timestamps. You need to retrieve and remove the earliest timestamp. Which methods should you use?

• A) getFirst() and removeFirst()

• B) first() and remove()

• C) lowest() and dequeue()

• D) earliest() and delete()

If you are using a BufferedReader to read text from a stream, which method would you use to read a line of text?

• A) readLine()

• B) readText()

• C) getText()

• D) nextLine()

When would you prefer ArrayList over LinkedList for implementing a list in Java?

• A) When frequent addition and removal of elements is required.

• B) When memory usage is more of a concern than performance.

• C) When there is a need to frequently update elements in the middle of the list.

• D) When fast random access to elements is required.

In Java, which of these classes are used to read characters from a file?

• A) FileInputStream

• B) FileReader

• C) BufferedInputStream

• D) DataInputStream